diff --git a/Emby.Dlna/Eventing/EventManager.cs b/Emby.Dlna/Eventing/EventManager.cs
index 56c90c8b3a..7d02f5e960 100644
--- a/Emby.Dlna/Eventing/EventManager.cs
+++ b/Emby.Dlna/Eventing/EventManager.cs
@@ -152,11 +152,15 @@ namespace Emby.Dlna.Eventing
             builder.Append("<e:propertyset xmlns:e=\"urn:schemas-upnp-org:event-1-0\">");
             foreach (var key in stateVariables.Keys)
             {
-                builder.Append("<e:property>");
-                builder.Append("<" + key + ">");
-                builder.Append(stateVariables[key]);
-                builder.Append("</" + key + ">");
-                builder.Append("</e:property>");
+                builder.Append("<e:property>")
+                    .Append('<')
+                    .Append(key)
+                    .Append('>')
+                    .Append(stateVariables[key])
+                    .Append("</")
+                    .Append(key)
+                    .Append('>')
+                    .Append("</e:property>");
             }
 
             builder.Append("</e:propertyset>");
diff --git a/Emby.Server.Implementations/Data/SqliteItemRepository.cs b/Emby.Server.Implementations/Data/SqliteItemRepository.cs
index a6390b1ef2..9f5566424c 100644
--- a/Emby.Server.Implementations/Data/SqliteItemRepository.cs
+++ b/Emby.Server.Implementations/Data/SqliteItemRepository.cs
@@ -1110,7 +1110,8 @@ namespace Emby.Server.Implementations.Data
                     continue;
                 }
 
-                str.Append(ToValueString(i) + "|");
+                str.Append(ToValueString(i))
+                    .Append('|');
             }
 
             str.Length -= 1; // Remove last |
@@ -2471,7 +2472,7 @@ namespace Emby.Server.Implementations.Data
                 var item = query.SimilarTo;
 
                 var builder = new StringBuilder();
-                builder.Append("(");
+                builder.Append('(');
 
                 if (string.IsNullOrEmpty(item.OfficialRating))
                 {
@@ -2509,7 +2510,7 @@ namespace Emby.Server.Implementations.Data
             if (!string.IsNullOrEmpty(query.SearchTerm))
             {
                 var builder = new StringBuilder();
-                builder.Append("(");
+                builder.Append('(');
 
                 builder.Append("((CleanName like @SearchTermStartsWith or (OriginalTitle not null and OriginalTitle like @SearchTermStartsWith)) * 10)");
 
@@ -5238,7 +5239,7 @@ where AncestorIdText not null and ItemValues.Value not null and ItemValues.Type
             {
                 if (i > 0)
                 {
-                    insertText.Append(",");
+                    insertText.Append(',');
                 }
 
                 insertText.AppendFormat("(@ItemId, @AncestorId{0}, @AncestorIdText{0})", i.ToString(CultureInfo.InvariantCulture));
@@ -6331,7 +6332,10 @@ where AncestorIdText not null and ItemValues.Value not null and ItemValues.Type
 
                     foreach (var column in _mediaAttachmentSaveColumns.Skip(1))
                     {
-                        insertText.Append("@" + column + index + ",");
+                        insertText.Append('@')
+                            .Append(column)
+                            .Append(index)
+                            .Append(',');
                     }
 
                     insertText.Length -= 1;
diff --git a/Emby.Server.Implementations/Services/ServicePath.cs b/Emby.Server.Implementations/Services/ServicePath.cs
index 89538ae729..bdda7c089e 100644
--- a/Emby.Server.Implementations/Services/ServicePath.cs
+++ b/Emby.Server.Implementations/Services/ServicePath.cs
@@ -488,7 +488,8 @@ namespace Emby.Server.Implementations.Services
                         sb.Append(value);
                         for (var j = pathIx + 1; j < requestComponents.Length; j++)
                         {
-                            sb.Append(PathSeperatorChar + requestComponents[j]);
+                            sb.Append(PathSeperatorChar)
+                                .Append(requestComponents[j]);
                         }
 
                         value = sb.ToString();
@@ -505,7 +506,8 @@ namespace Emby.Server.Implementations.Services
                             pathIx++;
                             while (!string.Equals(requestComponents[pathIx], stopLiteral, StringComparison.OrdinalIgnoreCase))
                             {
-                                sb.Append(PathSeperatorChar + requestComponents[pathIx++]);
+                                sb.Append(PathSeperatorChar)
+                                    .Append(requestComponents[pathIx++]);
                             }
 
                             value = sb.ToString();
diff --git a/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs b/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs
index ffbda42c31..74ebab6a72 100644
--- a/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs
+++ b/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs
@@ -372,7 +372,7 @@ namespace MediaBrowser.Controller.MediaEncoding
         public int GetVideoProfileScore(string profile)
         {
             // strip spaces because they may be stripped out on the query string
-            profile = profile.Replace(" ", "");
+            profile = profile.Replace(" ", string.Empty, CultureInfo.InvariantCulture);
             return Array.FindIndex(_videoProfiles, x => string.Equals(x, profile, StringComparison.OrdinalIgnoreCase));
         }
 
@@ -468,13 +468,13 @@ namespace MediaBrowser.Controller.MediaEncoding
                         arg.Append("-hwaccel_output_format vaapi ")
                             .Append("-vaapi_device ")
                             .Append(encodingOptions.VaapiDevice)
-                            .Append(" ");
+                            .Append(' ');
                     }
                     else if (!isVaapiDecoder && isVaapiEncoder)
                     {
                         arg.Append("-vaapi_device ")
                             .Append(encodingOptions.VaapiDevice)
-                            .Append(" ");
+                            .Append(' ');
                     }
                 }